ignore GitHub action files

[rene-d]

When syncing the crates.io-index, the GitHub action file update-dl-url.ymlis present in the Git mirror and will not be filtered out like config.json. It fails to be deserialized at line

panamax/src/crates.rs

Line 170 in d3e67b0

let c: CrateEntry = serde_json::from_str(&line).unwrap();

and panamax panics:

Syncing Crates repositories...
[1/3] Fetching crates.io-index...
[2/3] Syncing crates files...
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error("invalid number", line: 1, column: 2)', src/crates.rs:170:65
[2/3] Syncing crates files...

Now, paths that start with '.github/' will be skipped and the JSON deserialization should not stop the program if it fails.

[k3d3]

Oh wow, nice catch!

This looks like a good enough solution, ignoring files that can't be deserialized. Thanks!